build(aio): improve the API Pipe pages (#22702)

This change adds:

* an impure badge for Pipes that are marked as  `pure: false`
* a pipe specific overview that shows the syntax for using a pipe in a template.
* an "input value" section describing the type of the value that the pipe expects.
* a "pipe params" section describing any additional params that a pipe expects.

PR Close #22702

aio/tools/transforms/angular-api-package/index.js

@@ -21,6 +21,7 @@ module.exports = new Package('angular-api', [basePackage, typeScriptPackage])
   .processor(require('./processors/addNotYetDocumentedProperty'))
   .processor(require('./processors/mergeDecoratorDocs'))
   .processor(require('./processors/extractDecoratedClasses'))
+  .processor(require('./processors/extractPipeParams'))
   .processor(require('./processors/matchUpDirectiveDecorators'))
   .processor(require('./processors/addMetadataAliases'))
   .processor(require('./processors/computeApiBreadCrumbs'))